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W89C926PENTIC+ Datasheet

  • W89C926PENTIC+

  • PCMCIA ETHERNET NETWORK TWISTED PAIR INTERFACE CONTROLLER

  • 395.05KB

  • Winbond

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Preliminary W89C926 PENTIC+
PCMCIA ETHERNET NETWORK
TWISTED PAIR INTERFACE CONTROLLER
GENERAL DESCRIPTION
The W89C926 PENTIC+ is a CMOS device designed for easy implementation of PCMCIA R2.1
compatible CSMA/CD local area networks. The W89C926 combines a W89C902 Serial LAN
Coprocessor for Twisted-pair (SLCT) with a PCMCIA Bus Interface (PBI), thus integrating into
a single chip all the registers and logic necessary to connect the SLCT to buffer SRAMs, flash
memories (or an EEPROM), and the PCMCIA system bus.
The PCMCIA Bus Interface (PBI) is designed to provide a switchless setting architecture that allows
the card setting to be configured by software. It implements a full set of PCMCIA registers for
PCMCIA R2.1 compatibility and a set of configuration registers for switchless card setting. The card
can be configured quickly and easily by modifying the contents of the configuration registers. The
PENTIC+ can run with shared memory mode and NE2000
TM
I/O mode drivers on a 16-bit bus
interface. No extra effort is needed to ensure software compatibility.
The PENTIC+ provides a flexible flash memory (up to 128 KB)/EEPROM (up to 512 bytes)
architecture for PCMCIA nonvolatile storage and an ID/Configuration auto-load architecture for
power-on initialization. Vendors can store the Ethernet廬 ID, configuration, and CIS in the flash
memory or EEPROM. The PENTIC+ will auto-load necessary information when power is switched on.
FEATURES
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Runs with NE2000
TM
or shared memory drivers
Supports up to 128 KB flash memory (8K/112K for attribute/common memory) or 512 bytes
EEPROM (for attribute memory only) for nonvolatile memory
Uses one 16 KB SRAM or one 32 KB SRAM (if EEPROM is used) for 16 KB Ethernet ring buffer
Auto-load algorithm provided for power-on initialization
Supports necessary PCMCIA registers
Configuration registers allow switchless card setting
UTP/BNC auto media-switching function provided
Drives necessary LEDs for network status display
Single 5V power supply with low power consumption
100-pin thin package (TQFP) fits into PCMCIA Type II profile
Ethernet
廬
is a registered trademark of the Xerox Corporation.
NE2000
TM
is a trademark of Novell, Inc.
-1-
Publication Release Date: January 1996
Revision A1

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